"Yup. That's me," Tyson confirmed to Daily Intelligencer in an e-mail. "I take the subway when I can — fast, cheap, and easy. And when I do, I am always working. In fact, en-route to and from the Planetarium, I take less-crowded trains and routes, even if longer, assuring a seat for me to get work done. The universe can be quite demanding of my time."